ffplay.c 76.9 KB
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/*
 * FFplay : Simple Media Player based on the ffmpeg libraries
 * Copyright (c) 2003 Fabrice Bellard
 *
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 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
#define HAVE_AV_CONFIG_H
#include "avformat.h"
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#include "swscale.h"
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#include "version.h"
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#include "cmdutils.h"

#include <SDL.h>
#include <SDL_thread.h>

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#ifdef __MINGW32__
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#undef main /* We don't want SDL to override our main() */
#endif

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#ifdef CONFIG_OS2
#define INCL_DOS
 #include <os2.h>
 #include <stdio.h>
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 void MorphToPM()
 {
   PPIB pib;
   PTIB tib;
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   DosGetInfoBlocks(&tib, &pib);
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   // Change flag from VIO to PM:
   if (pib->pib_ultype==2) pib->pib_ultype = 3;
 }
#endif

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#undef exit

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//#define DEBUG_SYNC

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#define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
#define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
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#define MAX_SUBTITLEQ_SIZE (5 * 16 * 1024)
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/* SDL audio buffer size, in samples. Should be small to have precise
   A/V sync as SDL does not have hardware buffer fullness info. */
#define SDL_AUDIO_BUFFER_SIZE 1024

/* no AV sync correction is done if below the AV sync threshold */
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#define AV_SYNC_THRESHOLD 0.01
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/* no AV correction is done if too big error */
#define AV_NOSYNC_THRESHOLD 10.0

/* maximum audio speed change to get correct sync */
#define SAMPLE_CORRECTION_PERCENT_MAX 10

/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
#define AUDIO_DIFF_AVG_NB   20

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/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
#define SAMPLE_ARRAY_SIZE (2*65536)

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static int sws_flags = SWS_BICUBIC;

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typedef struct PacketQueue {
    AVPacketList *first_pkt, *last_pkt;
    int nb_packets;
    int size;
    int abort_request;
    SDL_mutex *mutex;
    SDL_cond *cond;
} PacketQueue;

#define VIDEO_PICTURE_QUEUE_SIZE 1
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#define SUBPICTURE_QUEUE_SIZE 4
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typedef struct VideoPicture {
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    double pts;                                  ///<presentation time stamp for this picture
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    SDL_Overlay *bmp;
    int width, height; /* source height & width */
    int allocated;
} VideoPicture;

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typedef struct SubPicture {
    double pts; /* presentation time stamp for this picture */
    AVSubtitle sub;
} SubPicture;

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enum {
    AV_SYNC_AUDIO_MASTER, /* default choice */
    AV_SYNC_VIDEO_MASTER,
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    AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
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};

typedef struct VideoState {
    SDL_Thread *parse_tid;
    SDL_Thread *video_tid;
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    AVInputFormat *iformat;
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    int no_background;
    int abort_request;
    int paused;
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    int last_paused;
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    int seek_req;
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    int seek_flags;
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    int64_t seek_pos;
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    AVFormatContext *ic;
    int dtg_active_format;

    int audio_stream;
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    int av_sync_type;
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    double external_clock; /* external clock base */
    int64_t external_clock_time;
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    double audio_clock;
    double audio_diff_cum; /* used for AV difference average computation */
    double audio_diff_avg_coef;
    double audio_diff_threshold;
    int audio_diff_avg_count;
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    AVStream *audio_st;
    PacketQueue audioq;
    int audio_hw_buf_size;
    /* samples output by the codec. we reserve more space for avsync
       compensation */
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    DECLARE_ALIGNED(16,uint8_t,audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
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    unsigned int audio_buf_size; /* in bytes */
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    int audio_buf_index; /* in bytes */
    AVPacket audio_pkt;
    uint8_t *audio_pkt_data;
    int audio_pkt_size;
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    int show_audio; /* if true, display audio samples */
    int16_t sample_array[SAMPLE_ARRAY_SIZE];
    int sample_array_index;
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    int last_i_start;
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    SDL_Thread *subtitle_tid;
    int subtitle_stream;
    int subtitle_stream_changed;
    AVStream *subtitle_st;
    PacketQueue subtitleq;
    SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
    int subpq_size, subpq_rindex, subpq_windex;
    SDL_mutex *subpq_mutex;
    SDL_cond *subpq_cond;
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    double frame_timer;
    double frame_last_pts;
    double frame_last_delay;
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    double video_clock;                          ///<pts of last decoded frame / predicted pts of next decoded frame
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    int video_stream;
    AVStream *video_st;
    PacketQueue videoq;
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    double video_current_pts;                    ///<current displayed pts (different from video_clock if frame fifos are used)
    int64_t video_current_pts_time;              ///<time (av_gettime) at which we updated video_current_pts - used to have running video pts
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    VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
    int pictq_size, pictq_rindex, pictq_windex;
    SDL_mutex *pictq_mutex;
    SDL_cond *pictq_cond;
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    //    QETimer *video_timer;
    char filename[1024];
    int width, height, xleft, ytop;
} VideoState;

void show_help(void);
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static int audio_write_get_buf_size(VideoState *is);
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/* options specified by the user */
static AVInputFormat *file_iformat;
static const char *input_filename;
static int fs_screen_width;
static int fs_screen_height;
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static int screen_width = 0;
static int screen_height = 0;
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static int frame_width = 0;
static int frame_height = 0;
static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
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static int audio_disable;
static int video_disable;
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static int wanted_audio_stream= 0;
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static int seek_by_bytes;
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static int display_disable;
static int show_status;
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static int av_sync_type = AV_SYNC_AUDIO_MASTER;
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static int64_t start_time = AV_NOPTS_VALUE;
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static int debug = 0;
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static int debug_mv = 0;
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static int step = 0;
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static int thread_count = 1;
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static int workaround_bugs = 1;
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static int fast = 0;
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static int genpts = 0;
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static int lowres = 0;
static int idct = FF_IDCT_AUTO;
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static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
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static int error_resilience = FF_ER_CAREFUL;
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static int error_concealment = 3;
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static int decoder_reorder_pts= 0;
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/* current context */
static int is_full_screen;
static VideoState *cur_stream;
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static int64_t audio_callback_time;
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AVPacket flush_pkt;

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#define FF_ALLOC_EVENT   (SDL_USEREVENT)
#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
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#define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
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SDL_Surface *screen;

/* packet queue handling */
static void packet_queue_init(PacketQueue *q)
{
    memset(q, 0, sizeof(PacketQueue));
    q->mutex = SDL_CreateMutex();
    q->cond = SDL_CreateCond();
}

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static void packet_queue_flush(PacketQueue *q)
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{
    AVPacketList *pkt, *pkt1;

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    SDL_LockMutex(q->mutex);
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    for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
        pkt1 = pkt->next;
        av_free_packet(&pkt->pkt);
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        av_freep(&pkt);
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    }
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    q->last_pkt = NULL;
    q->first_pkt = NULL;
    q->nb_packets = 0;
    q->size = 0;
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    SDL_UnlockMutex(q->mutex);
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}

static void packet_queue_end(PacketQueue *q)
{
    packet_queue_flush(q);
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    SDL_DestroyMutex(q->mutex);
    SDL_DestroyCond(q->cond);
}

static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
{
    AVPacketList *pkt1;

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    /* duplicate the packet */
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    if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
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        return -1;
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    pkt1 = av_malloc(sizeof(AVPacketList));
    if (!pkt1)
        return -1;
    pkt1->pkt = *pkt;
    pkt1->next = NULL;

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    SDL_LockMutex(q->mutex);

    if (!q->last_pkt)

        q->first_pkt = pkt1;
    else
        q->last_pkt->next = pkt1;
    q->last_pkt = pkt1;
    q->nb_packets++;
    q->size += pkt1->pkt.size;
    /* XXX: should duplicate packet data in DV case */
    SDL_CondSignal(q->cond);

    SDL_UnlockMutex(q->mutex);
    return 0;
}

static void packet_queue_abort(PacketQueue *q)
{
    SDL_LockMutex(q->mutex);

    q->abort_request = 1;
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    SDL_CondSignal(q->cond);

    SDL_UnlockMutex(q->mutex);
}

/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
{
    AVPacketList *pkt1;
    int ret;

    SDL_LockMutex(q->mutex);

    for(;;) {
        if (q->abort_request) {
            ret = -1;
            break;
        }
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        pkt1 = q->first_pkt;
        if (pkt1) {
            q->first_pkt = pkt1->next;
            if (!q->first_pkt)
                q->last_pkt = NULL;
            q->nb_packets--;
            q->size -= pkt1->pkt.size;
            *pkt = pkt1->pkt;
            av_free(pkt1);
            ret = 1;
            break;
        } else if (!block) {
            ret = 0;
            break;
        } else {
            SDL_CondWait(q->cond, q->mutex);
        }
    }
    SDL_UnlockMutex(q->mutex);
    return ret;
}

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static inline void fill_rectangle(SDL_Surface *screen,
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                                  int x, int y, int w, int h, int color)
{
    SDL_Rect rect;
    rect.x = x;
    rect.y = y;
    rect.w = w;
    rect.h = h;
    SDL_FillRect(screen, &rect, color);
}

#if 0
/* draw only the border of a rectangle */
void fill_border(VideoState *s, int x, int y, int w, int h, int color)
{
    int w1, w2, h1, h2;

    /* fill the background */
    w1 = x;
    if (w1 < 0)
        w1 = 0;
    w2 = s->width - (x + w);
    if (w2 < 0)
        w2 = 0;
    h1 = y;
    if (h1 < 0)
        h1 = 0;
    h2 = s->height - (y + h);
    if (h2 < 0)
        h2 = 0;
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    fill_rectangle(screen,
                   s->xleft, s->ytop,
                   w1, s->height,
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                   color);
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    fill_rectangle(screen,
                   s->xleft + s->width - w2, s->ytop,
                   w2, s->height,
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                   color);
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    fill_rectangle(screen,
                   s->xleft + w1, s->ytop,
                   s->width - w1 - w2, h1,
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                   color);
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    fill_rectangle(screen,
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                   s->xleft + w1, s->ytop + s->height - h2,
                   s->width - w1 - w2, h2,
                   color);
}
#endif

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#define SCALEBITS 10
#define ONE_HALF  (1 << (SCALEBITS - 1))
#define FIX(x)    ((int) ((x) * (1<<SCALEBITS) + 0.5))

#define RGB_TO_Y_CCIR(r, g, b) \
((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
  FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)

#define RGB_TO_U_CCIR(r1, g1, b1, shift)\
(((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 +         \
     FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)

#define RGB_TO_V_CCIR(r1, g1, b1, shift)\
(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 -           \
   FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)

#define ALPHA_BLEND(a, oldp, newp, s)\
((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))

#define RGBA_IN(r, g, b, a, s)\
{\
    unsigned int v = ((const uint32_t *)(s))[0];\
    a = (v >> 24) & 0xff;\
    r = (v >> 16) & 0xff;\
    g = (v >> 8) & 0xff;\
    b = v & 0xff;\
}

#define YUVA_IN(y, u, v, a, s, pal)\
{\
    unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)s];\
    a = (val >> 24) & 0xff;\
    y = (val >> 16) & 0xff;\
    u = (val >> 8) & 0xff;\
    v = val & 0xff;\
}

#define YUVA_OUT(d, y, u, v, a)\
{\
    ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
}


#define BPP 1

static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect)
{
    int wrap, wrap3, width2, skip2;
    int y, u, v, a, u1, v1, a1, w, h;
    uint8_t *lum, *cb, *cr;
    const uint8_t *p;
    const uint32_t *pal;

    lum = dst->data[0] + rect->y * dst->linesize[0];
    cb = dst->data[1] + (rect->y >> 1) * dst->linesize[1];
    cr = dst->data[2] + (rect->y >> 1) * dst->linesize[2];

    width2 = (rect->w + 1) >> 1;
    skip2 = rect->x >> 1;
    wrap = dst->linesize[0];
    wrap3 = rect->linesize;
    p = rect->bitmap;
    pal = rect->rgba_palette;  /* Now in YCrCb! */
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    if (rect->y & 1) {
        lum += rect->x;
        cb += skip2;
        cr += skip2;
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        if (rect->x & 1) {
            YUVA_IN(y, u, v, a, p, pal);
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
            cb++;
            cr++;
            lum++;
            p += BPP;
        }
        for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
            YUVA_IN(y, u, v, a, p, pal);
            u1 = u;
            v1 = v;
            a1 = a;
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);

            YUVA_IN(y, u, v, a, p + BPP, pal);
            u1 += u;
            v1 += v;
            a1 += a;
            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
            cb++;
            cr++;
            p += 2 * BPP;
            lum += 2;
        }
        if (w) {
            YUVA_IN(y, u, v, a, p, pal);
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
        }
        p += wrap3 + (wrap3 - rect->w * BPP);
        lum += wrap + (wrap - rect->w - rect->x);
        cb += dst->linesize[1] - width2 - skip2;
        cr += dst->linesize[2] - width2 - skip2;
    }
    for(h = rect->h - (rect->y & 1); h >= 2; h -= 2) {
        lum += rect->x;
        cb += skip2;
        cr += skip2;
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        if (rect->x & 1) {
            YUVA_IN(y, u, v, a, p, pal);
            u1 = u;
            v1 = v;
            a1 = a;
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
            p += wrap3;
            lum += wrap;
            YUVA_IN(y, u, v, a, p, pal);
            u1 += u;
            v1 += v;
            a1 += a;
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
            cb++;
            cr++;
            p += -wrap3 + BPP;
            lum += -wrap + 1;
        }
        for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
            YUVA_IN(y, u, v, a, p, pal);
            u1 = u;
            v1 = v;
            a1 = a;
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);

            YUVA_IN(y, u, v, a, p, pal);
            u1 += u;
            v1 += v;
            a1 += a;
            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
            p += wrap3;
            lum += wrap;

            YUVA_IN(y, u, v, a, p, pal);
            u1 += u;
            v1 += v;
            a1 += a;
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);

            YUVA_IN(y, u, v, a, p, pal);
            u1 += u;
            v1 += v;
            a1 += a;
            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);

            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);

            cb++;
            cr++;
            p += -wrap3 + 2 * BPP;
            lum += -wrap + 2;
        }
        if (w) {
            YUVA_IN(y, u, v, a, p, pal);
            u1 = u;
            v1 = v;
            a1 = a;
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
            p += wrap3;
            lum += wrap;
            YUVA_IN(y, u, v, a, p, pal);
            u1 += u;
            v1 += v;
            a1 += a;
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
            cb++;
            cr++;
            p += -wrap3 + BPP;
            lum += -wrap + 1;
        }
        p += wrap3 + (wrap3 - rect->w * BPP);
        lum += wrap + (wrap - rect->w - rect->x);
        cb += dst->linesize[1] - width2 - skip2;
        cr += dst->linesize[2] - width2 - skip2;
    }
    /* handle odd height */
    if (h) {
        lum += rect->x;
        cb += skip2;
        cr += skip2;
592

593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633
        if (rect->x & 1) {
            YUVA_IN(y, u, v, a, p, pal);
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
            cb++;
            cr++;
            lum++;
            p += BPP;
        }
        for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
            YUVA_IN(y, u, v, a, p, pal);
            u1 = u;
            v1 = v;
            a1 = a;
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);

            YUVA_IN(y, u, v, a, p + BPP, pal);
            u1 += u;
            v1 += v;
            a1 += a;
            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
            cb++;
            cr++;
            p += 2 * BPP;
            lum += 2;
        }
        if (w) {
            YUVA_IN(y, u, v, a, p, pal);
            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
        }
    }
}

static void free_subpicture(SubPicture *sp)
{
    int i;
634

635 636 637 638 639
    for (i = 0; i < sp->sub.num_rects; i++)
    {
        av_free(sp->sub.rects[i].bitmap);
        av_free(sp->sub.rects[i].rgba_palette);
    }
640

641
    av_free(sp->sub.rects);
642

643 644 645
    memset(&sp->sub, 0, sizeof(AVSubtitle));
}

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static void video_image_display(VideoState *is)
{
    VideoPicture *vp;
649 650
    SubPicture *sp;
    AVPicture pict;
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    float aspect_ratio;
    int width, height, x, y;
    SDL_Rect rect;
654
    int i;
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    vp = &is->pictq[is->pictq_rindex];
    if (vp->bmp) {
        /* XXX: use variable in the frame */
659
        if (is->video_st->codec->sample_aspect_ratio.num == 0)
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            aspect_ratio = 0;
        else
662
            aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio)
663
                * is->video_st->codec->width / is->video_st->codec->height;;
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        if (aspect_ratio <= 0.0)
665
            aspect_ratio = (float)is->video_st->codec->width /
666
                (float)is->video_st->codec->height;
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        /* if an active format is indicated, then it overrides the
           mpeg format */
#if 0
670 671
        if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
            is->dtg_active_format = is->video_st->codec->dtg_active_format;
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            printf("dtg_active_format=%d\n", is->dtg_active_format);
        }
#endif
#if 0
676
        switch(is->video_st->codec->dtg_active_format) {
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        case FF_DTG_AFD_SAME:
        default:
            /* nothing to do */
            break;
        case FF_DTG_AFD_4_3:
            aspect_ratio = 4.0 / 3.0;
            break;
        case FF_DTG_AFD_16_9:
            aspect_ratio = 16.0 / 9.0;
            break;
        case FF_DTG_AFD_14_9:
            aspect_ratio = 14.0 / 9.0;
            break;
        case FF_DTG_AFD_4_3_SP_14_9:
            aspect_ratio = 14.0 / 9.0;
            break;
        case FF_DTG_AFD_16_9_SP_14_9:
            aspect_ratio = 14.0 / 9.0;
            break;
        case FF_DTG_AFD_SP_4_3:
            aspect_ratio = 4.0 / 3.0;
            break;
        }
#endif

702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728
        if (is->subtitle_st)
        {
            if (is->subpq_size > 0)
            {
                sp = &is->subpq[is->subpq_rindex];

                if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
                {
                    SDL_LockYUVOverlay (vp->bmp);

                    pict.data[0] = vp->bmp->pixels[0];
                    pict.data[1] = vp->bmp->pixels[2];
                    pict.data[2] = vp->bmp->pixels[1];

                    pict.linesize[0] = vp->bmp->pitches[0];
                    pict.linesize[1] = vp->bmp->pitches[2];
                    pict.linesize[2] = vp->bmp->pitches[1];

                    for (i = 0; i < sp->sub.num_rects; i++)
                        blend_subrect(&pict, &sp->sub.rects[i]);

                    SDL_UnlockYUVOverlay (vp->bmp);
                }
            }
        }


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        /* XXX: we suppose the screen has a 1.0 pixel ratio */
        height = is->height;
        width = ((int)rint(height * aspect_ratio)) & -3;
        if (width > is->width) {
            width = is->width;
            height = ((int)rint(width / aspect_ratio)) & -3;
        }
        x = (is->width - width) / 2;
        y = (is->height - height) / 2;
        if (!is->no_background) {
            /* fill the background */
            //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
        } else {
            is->no_background = 0;
        }
        rect.x = is->xleft + x;
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        rect.y = is->ytop  + y;
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        rect.w = width;
        rect.h = height;
        SDL_DisplayYUVOverlay(vp->bmp, &rect);
    } else {
#if 0
751 752
        fill_rectangle(screen,
                       is->xleft, is->ytop, is->width, is->height,
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                       QERGB(0x00, 0x00, 0x00));
#endif
    }
}

static inline int compute_mod(int a, int b)
{
    a = a % b;
761
    if (a >= 0)
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        return a;
    else
        return a + b;
}

static void video_audio_display(VideoState *s)
{
    int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
    int ch, channels, h, h2, bgcolor, fgcolor;
    int16_t time_diff;
772

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    /* compute display index : center on currently output samples */
774
    channels = s->audio_st->codec->channels;
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    nb_display_channels = channels;
776 777 778 779
    if (!s->paused) {
        n = 2 * channels;
        delay = audio_write_get_buf_size(s);
        delay /= n;
780

781 782 783 784
        /* to be more precise, we take into account the time spent since
           the last buffer computation */
        if (audio_callback_time) {
            time_diff = av_gettime() - audio_callback_time;
785
            delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
786
        }
787

788 789 790
        delay -= s->width / 2;
        if (delay < s->width)
            delay = s->width;
791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807

        i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);

        h= INT_MIN;
        for(i=0; i<1000; i+=channels){
            int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
            int a= s->sample_array[idx];
            int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
            int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
            int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
            int score= a-d;
            if(h<score && (b^c)<0){
                h= score;
                i_start= idx;
            }
        }

808 809 810
        s->last_i_start = i_start;
    } else {
        i_start = s->last_i_start;
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    }

    bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
814 815
    fill_rectangle(screen,
                   s->xleft, s->ytop, s->width, s->height,
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Fabrice Bellard 已提交
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                   bgcolor);

    fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);

    /* total height for one channel */
    h = s->height / nb_display_channels;
    /* graph height / 2 */
    h2 = (h * 9) / 20;
    for(ch = 0;ch < nb_display_channels; ch++) {
        i = i_start + ch;
        y1 = s->ytop + ch * h + (h / 2); /* position of center line */
        for(x = 0; x < s->width; x++) {
            y = (s->sample_array[i] * h2) >> 15;
            if (y < 0) {
                y = -y;
                ys = y1 - y;
            } else {
                ys = y1;
            }
835 836
            fill_rectangle(screen,
                           s->xleft + x, ys, 1, y,
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                           fgcolor);
            i += channels;
            if (i >= SAMPLE_ARRAY_SIZE)
                i -= SAMPLE_ARRAY_SIZE;
        }
    }

    fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);

    for(ch = 1;ch < nb_display_channels; ch++) {
        y = s->ytop + ch * h;
848 849
        fill_rectangle(screen,
                       s->xleft, y, s->width, 1,
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                       fgcolor);
    }
    SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
}

855 856 857 858
static int video_open(VideoState *is){
    int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
    int w,h;

859 860 861
    if(is_full_screen) flags |= SDL_FULLSCREEN;
    else               flags |= SDL_RESIZABLE;

862 863 864
    if (is_full_screen && fs_screen_width) {
        w = fs_screen_width;
        h = fs_screen_height;
865 866 867 868 869 870
    } else if(!is_full_screen && screen_width){
        w = screen_width;
        h = screen_height;
    }else if (is->video_st && is->video_st->codec->width){
        w = is->video_st->codec->width;
        h = is->video_st->codec->height;
871
    } else {
872 873
        w = 640;
        h = 480;
874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891
    }
#ifndef CONFIG_DARWIN
    screen = SDL_SetVideoMode(w, h, 0, flags);
#else
    /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
    screen = SDL_SetVideoMode(w, h, 24, flags);
#endif
    if (!screen) {
        fprintf(stderr, "SDL: could not set video mode - exiting\n");
        return -1;
    }
    SDL_WM_SetCaption("FFplay", "FFplay");

    is->width = screen->w;
    is->height = screen->h;

    return 0;
}
892

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/* display the current picture, if any */
static void video_display(VideoState *is)
{
896 897
    if(!screen)
        video_open(cur_stream);
898
    if (is->audio_st && is->show_audio)
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        video_audio_display(is);
    else if (is->video_st)
        video_image_display(is);
}

static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
{
    SDL_Event event;
    event.type = FF_REFRESH_EVENT;
    event.user.data1 = opaque;
    SDL_PushEvent(&event);
    return 0; /* 0 means stop timer */
}

/* schedule a video refresh in 'delay' ms */
static void schedule_refresh(VideoState *is, int delay)
{
    SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
}

919 920 921 922 923 924 925 926 927
/* get the current audio clock value */
static double get_audio_clock(VideoState *is)
{
    double pts;
    int hw_buf_size, bytes_per_sec;
    pts = is->audio_clock;
    hw_buf_size = audio_write_get_buf_size(is);
    bytes_per_sec = 0;
    if (is->audio_st) {
928
        bytes_per_sec = is->audio_st->codec->sample_rate *
929
            2 * is->audio_st->codec->channels;
930 931 932 933 934 935 936 937 938 939
    }
    if (bytes_per_sec)
        pts -= (double)hw_buf_size / bytes_per_sec;
    return pts;
}

/* get the current video clock value */
static double get_video_clock(VideoState *is)
{
    double delta;
M
oops  
Michael Niedermayer 已提交
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    if (is->paused) {
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        delta = 0;
    } else {
        delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
    }
945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960
    return is->video_current_pts + delta;
}

/* get the current external clock value */
static double get_external_clock(VideoState *is)
{
    int64_t ti;
    ti = av_gettime();
    return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
}

/* get the current master clock value */
static double get_master_clock(VideoState *is)
{
    double val;

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    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
        if (is->video_st)
            val = get_video_clock(is);
        else
            val = get_audio_clock(is);
    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
        if (is->audio_st)
            val = get_audio_clock(is);
        else
            val = get_video_clock(is);
    } else {
972
        val = get_external_clock(is);
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    }
974 975 976
    return val;
}

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/* seek in the stream */
978
static void stream_seek(VideoState *is, int64_t pos, int rel)
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{
980 981 982
    if (!is->seek_req) {
        is->seek_pos = pos;
        is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
983 984
        if (seek_by_bytes)
            is->seek_flags |= AVSEEK_FLAG_BYTE;
985 986
        is->seek_req = 1;
    }
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}

/* pause or resume the video */
static void stream_pause(VideoState *is)
{
    is->paused = !is->paused;
993
    if (!is->paused) {
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        is->video_current_pts = get_video_clock(is);
995
        is->frame_timer += (av_gettime() - is->video_current_pts_time) / 1000000.0;
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    }
}

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/* called to display each frame */
static void video_refresh_timer(void *opaque)
{
    VideoState *is = opaque;
    VideoPicture *vp;
1004 1005
    double actual_delay, delay, sync_threshold, ref_clock, diff;

1006
    SubPicture *sp, *sp2;
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    if (is->video_st) {
        if (is->pictq_size == 0) {
            /* if no picture, need to wait */
1011
            schedule_refresh(is, 1);
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        } else {
1013
            /* dequeue the picture */
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            vp = &is->pictq[is->pictq_rindex];
1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035

            /* update current video pts */
            is->video_current_pts = vp->pts;
            is->video_current_pts_time = av_gettime();

            /* compute nominal delay */
            delay = vp->pts - is->frame_last_pts;
            if (delay <= 0 || delay >= 1.0) {
                /* if incorrect delay, use previous one */
                delay = is->frame_last_delay;
            }
            is->frame_last_delay = delay;
            is->frame_last_pts = vp->pts;

            /* update delay to follow master synchronisation source */
            if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
                 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
                /* if video is slave, we try to correct big delays by
                   duplicating or deleting a frame */
                ref_clock = get_master_clock(is);
                diff = vp->pts - ref_clock;
1036

1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058
                /* skip or repeat frame. We take into account the
                   delay to compute the threshold. I still don't know
                   if it is the best guess */
                sync_threshold = AV_SYNC_THRESHOLD;
                if (delay > sync_threshold)
                    sync_threshold = delay;
                if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
                    if (diff <= -sync_threshold)
                        delay = 0;
                    else if (diff >= sync_threshold)
                        delay = 2 * delay;
                }
            }

            is->frame_timer += delay;
            /* compute the REAL delay (we need to do that to avoid
               long term errors */
            actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
            if (actual_delay < 0.010) {
                /* XXX: should skip picture */
                actual_delay = 0.010;
            }
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            /* launch timer for next picture */
1060 1061 1062
            schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));

#if defined(DEBUG_SYNC)
1063
            printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1064 1065
                   delay, actual_delay, vp->pts, -diff);
#endif
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1067 1068 1069
            if(is->subtitle_st) {
                if (is->subtitle_stream_changed) {
                    SDL_LockMutex(is->subpq_mutex);
1070

1071 1072
                    while (is->subpq_size) {
                        free_subpicture(&is->subpq[is->subpq_rindex]);
1073

1074 1075 1076
                        /* update queue size and signal for next picture */
                        if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
                            is->subpq_rindex = 0;
1077

1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
                        is->subpq_size--;
                    }
                    is->subtitle_stream_changed = 0;

                    SDL_CondSignal(is->subpq_cond);
                    SDL_UnlockMutex(is->subpq_mutex);
                } else {
                    if (is->subpq_size > 0) {
                        sp = &is->subpq[is->subpq_rindex];

                        if (is->subpq_size > 1)
                            sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
                        else
                            sp2 = NULL;

                        if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
                                || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
                        {
                            free_subpicture(sp);

                            /* update queue size and signal for next picture */
                            if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
                                is->subpq_rindex = 0;

                            SDL_LockMutex(is->subpq_mutex);
                            is->subpq_size--;
                            SDL_CondSignal(is->subpq_cond);
                            SDL_UnlockMutex(is->subpq_mutex);
                        }
                    }
                }
            }

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            /* display picture */
            video_display(is);
1113

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            /* update queue size and signal for next picture */
            if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
                is->pictq_rindex = 0;
1117

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            SDL_LockMutex(is->pictq_mutex);
            is->pictq_size--;
            SDL_CondSignal(is->pictq_cond);
            SDL_UnlockMutex(is->pictq_mutex);
        }
    } else if (is->audio_st) {
        /* draw the next audio frame */

        schedule_refresh(is, 40);

        /* if only audio stream, then display the audio bars (better
           than nothing, just to test the implementation */
1130

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        /* display picture */
        video_display(is);
    } else {
        schedule_refresh(is, 100);
    }
    if (show_status) {
        static int64_t last_time;
        int64_t cur_time;
1139
        int aqsize, vqsize, sqsize;
1140
        double av_diff;
1141

F
Fabrice Bellard 已提交
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        cur_time = av_gettime();
        if (!last_time || (cur_time - last_time) >= 500 * 1000) {
            aqsize = 0;
            vqsize = 0;
1146
            sqsize = 0;
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            if (is->audio_st)
                aqsize = is->audioq.size;
            if (is->video_st)
                vqsize = is->videoq.size;
1151 1152
            if (is->subtitle_st)
                sqsize = is->subtitleq.size;
1153 1154 1155
            av_diff = 0;
            if (is->audio_st && is->video_st)
                av_diff = get_audio_clock(is) - get_video_clock(is);
1156
            printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB sq=%5dB    \r",
1157
                   get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024, sqsize);
F
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1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175
            fflush(stdout);
            last_time = cur_time;
        }
    }
}

/* allocate a picture (needs to do that in main thread to avoid
   potential locking problems */
static void alloc_picture(void *opaque)
{
    VideoState *is = opaque;
    VideoPicture *vp;

    vp = &is->pictq[is->pictq_windex];

    if (vp->bmp)
        SDL_FreeYUVOverlay(vp->bmp);

1176
#if 0
F
Fabrice Bellard 已提交
1177
    /* XXX: use generic function */
1178
    /* XXX: disable overlay if no hardware acceleration or if RGB format */
1179
    switch(is->video_st->codec->pix_fmt) {
F
Fabrice Bellard 已提交
1180 1181 1182
    case PIX_FMT_YUV420P:
    case PIX_FMT_YUV422P:
    case PIX_FMT_YUV444P:
1183
    case PIX_FMT_YUYV422:
F
Fabrice Bellard 已提交
1184 1185 1186 1187 1188 1189 1190 1191 1192
    case PIX_FMT_YUV410P:
    case PIX_FMT_YUV411P:
        is_yuv = 1;
        break;
    default:
        is_yuv = 0;
        break;
    }
#endif
1193 1194
    vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
                                   is->video_st->codec->height,
1195
                                   SDL_YV12_OVERLAY,
1196
                                   screen);
1197 1198
    vp->width = is->video_st->codec->width;
    vp->height = is->video_st->codec->height;
F
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1199 1200 1201 1202 1203 1204 1205

    SDL_LockMutex(is->pictq_mutex);
    vp->allocated = 1;
    SDL_CondSignal(is->pictq_cond);
    SDL_UnlockMutex(is->pictq_mutex);
}

M
Michael Niedermayer 已提交
1206 1207 1208 1209
/**
 *
 * @param pts the dts of the pkt / pts of the frame and guessed if not known
 */
1210
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
F
Fabrice Bellard 已提交
1211 1212 1213 1214
{
    VideoPicture *vp;
    int dst_pix_fmt;
    AVPicture pict;
1215
    static struct SwsContext *img_convert_ctx;
1216

F
Fabrice Bellard 已提交
1217 1218 1219 1220 1221 1222 1223
    /* wait until we have space to put a new picture */
    SDL_LockMutex(is->pictq_mutex);
    while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
           !is->videoq.abort_request) {
        SDL_CondWait(is->pictq_cond, is->pictq_mutex);
    }
    SDL_UnlockMutex(is->pictq_mutex);
1224

F
Fabrice Bellard 已提交
1225 1226 1227 1228 1229 1230
    if (is->videoq.abort_request)
        return -1;

    vp = &is->pictq[is->pictq_windex];

    /* alloc or resize hardware picture buffer */
1231
    if (!vp->bmp ||
1232 1233
        vp->width != is->video_st->codec->width ||
        vp->height != is->video_st->codec->height) {
F
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1234 1235 1236 1237 1238 1239 1240 1241 1242
        SDL_Event event;

        vp->allocated = 0;

        /* the allocation must be done in the main thread to avoid
           locking problems */
        event.type = FF_ALLOC_EVENT;
        event.user.data1 = is;
        SDL_PushEvent(&event);
1243

F
Fabrice Bellard 已提交
1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
        /* wait until the picture is allocated */
        SDL_LockMutex(is->pictq_mutex);
        while (!vp->allocated && !is->videoq.abort_request) {
            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
        }
        SDL_UnlockMutex(is->pictq_mutex);

        if (is->videoq.abort_request)
            return -1;
    }

1255
    /* if the frame is not skipped, then display it */
F
Fabrice Bellard 已提交
1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267
    if (vp->bmp) {
        /* get a pointer on the bitmap */
        SDL_LockYUVOverlay (vp->bmp);

        dst_pix_fmt = PIX_FMT_YUV420P;
        pict.data[0] = vp->bmp->pixels[0];
        pict.data[1] = vp->bmp->pixels[2];
        pict.data[2] = vp->bmp->pixels[1];

        pict.linesize[0] = vp->bmp->pitches[0];
        pict.linesize[1] = vp->bmp->pitches[2];
        pict.linesize[2] = vp->bmp->pitches[1];
1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
        if (img_convert_ctx == NULL) {
            img_convert_ctx = sws_getContext(is->video_st->codec->width,
                    is->video_st->codec->height, is->video_st->codec->pix_fmt,
                    is->video_st->codec->width, is->video_st->codec->height,
                    dst_pix_fmt, sws_flags, NULL, NULL, NULL);
            if (img_convert_ctx == NULL) {
                fprintf(stderr, "Cannot initialize the conversion context\n");
                exit(1);
            }
        }
        sws_scale(img_convert_ctx, src_frame->data, src_frame->linesize,
                  0, is->video_st->codec->height, pict.data, pict.linesize);
F
Fabrice Bellard 已提交
1280 1281 1282
        /* update the bitmap content */
        SDL_UnlockYUVOverlay(vp->bmp);

1283
        vp->pts = pts;
F
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1284 1285 1286 1287 1288 1289 1290 1291

        /* now we can update the picture count */
        if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
            is->pictq_windex = 0;
        SDL_LockMutex(is->pictq_mutex);
        is->pictq_size++;
        SDL_UnlockMutex(is->pictq_mutex);
    }
1292 1293 1294
    return 0;
}

1295 1296
/**
 * compute the exact PTS for the picture if it is omitted in the stream
M
Michael Niedermayer 已提交
1297 1298
 * @param pts1 the dts of the pkt / pts of the frame
 */
1299 1300 1301
static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
{
    double frame_delay, pts;
1302

1303 1304
    pts = pts1;

F
Fabrice Bellard 已提交
1305
    if (pts != 0) {
1306
        /* update video clock with pts, if present */
F
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1307 1308
        is->video_clock = pts;
    } else {
F
Fabrice Bellard 已提交
1309 1310 1311
        pts = is->video_clock;
    }
    /* update video clock for next frame */
1312
    frame_delay = av_q2d(is->video_st->codec->time_base);
F
Fabrice Bellard 已提交
1313 1314
    /* for MPEG2, the frame can be repeated, so we update the
       clock accordingly */
M
Michael Niedermayer 已提交
1315
    frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
F
Fabrice Bellard 已提交
1316
    is->video_clock += frame_delay;
1317 1318 1319 1320 1321 1322 1323 1324 1325 1326

#if defined(DEBUG_SYNC) && 0
    {
        int ftype;
        if (src_frame->pict_type == FF_B_TYPE)
            ftype = 'B';
        else if (src_frame->pict_type == FF_I_TYPE)
            ftype = 'I';
        else
            ftype = 'P';
1327
        printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
F
Fabrice Bellard 已提交
1328
               ftype, pts, pts1);
1329 1330
    }
#endif
F
Fabrice Bellard 已提交
1331
    return queue_picture(is, src_frame, pts);
F
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1332 1333
}

1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348
static uint64_t global_video_pkt_pts= AV_NOPTS_VALUE;

static int my_get_buffer(struct AVCodecContext *c, AVFrame *pic){
    int ret= avcodec_default_get_buffer(c, pic);
    uint64_t *pts= av_malloc(sizeof(uint64_t));
    *pts= global_video_pkt_pts;
    pic->opaque= pts;
    return ret;
}

static void my_release_buffer(struct AVCodecContext *c, AVFrame *pic){
    if(pic) av_freep(&pic->opaque);
    avcodec_default_release_buffer(c, pic);
}

F
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1349 1350 1351 1352
static int video_thread(void *arg)
{
    VideoState *is = arg;
    AVPacket pkt1, *pkt = &pkt1;
F
Fabrice Bellard 已提交
1353
    int len1, got_picture;
M
Michael Niedermayer 已提交
1354
    AVFrame *frame= avcodec_alloc_frame();
F
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1355 1356 1357 1358 1359 1360 1361 1362
    double pts;

    for(;;) {
        while (is->paused && !is->videoq.abort_request) {
            SDL_Delay(10);
        }
        if (packet_queue_get(&is->videoq, pkt, 1) < 0)
            break;
1363 1364 1365 1366 1367 1368

        if(pkt->data == flush_pkt.data){
            avcodec_flush_buffers(is->video_st->codec);
            continue;
        }

1369 1370
        /* NOTE: ipts is the PTS of the _first_ picture beginning in
           this packet, if any */
M
Michael Niedermayer 已提交
1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383
        global_video_pkt_pts= pkt->pts;
        len1 = avcodec_decode_video(is->video_st->codec,
                                    frame, &got_picture,
                                    pkt->data, pkt->size);

        if(   (decoder_reorder_pts || pkt->dts == AV_NOPTS_VALUE)
           && frame->opaque && *(uint64_t*)frame->opaque != AV_NOPTS_VALUE)
            pts= *(uint64_t*)frame->opaque;
        else if(pkt->dts != AV_NOPTS_VALUE)
            pts= pkt->dts;
        else
            pts= 0;
        pts *= av_q2d(is->video_st->time_base);
1384

1385 1386
//            if (len1 < 0)
//                break;
M
Michael Niedermayer 已提交
1387 1388 1389 1390
        if (got_picture) {
            if (output_picture2(is, frame, pts) < 0)
                goto the_end;
        }
F
Fabrice Bellard 已提交
1391
        av_free_packet(pkt);
1392
        if (step)
1393 1394
            if (cur_stream)
                stream_pause(cur_stream);
F
Fabrice Bellard 已提交
1395 1396
    }
 the_end:
M
Michael Niedermayer 已提交
1397
    av_free(frame);
F
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1398 1399 1400
    return 0;
}

1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416
static int subtitle_thread(void *arg)
{
    VideoState *is = arg;
    SubPicture *sp;
    AVPacket pkt1, *pkt = &pkt1;
    int len1, got_subtitle;
    double pts;
    int i, j;
    int r, g, b, y, u, v, a;

    for(;;) {
        while (is->paused && !is->subtitleq.abort_request) {
            SDL_Delay(10);
        }
        if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
            break;
1417

1418 1419 1420 1421
        if(pkt->data == flush_pkt.data){
            avcodec_flush_buffers(is->subtitle_st->codec);
            continue;
        }
1422 1423 1424 1425 1426 1427
        SDL_LockMutex(is->subpq_mutex);
        while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
               !is->subtitleq.abort_request) {
            SDL_CondWait(is->subpq_cond, is->subpq_mutex);
        }
        SDL_UnlockMutex(is->subpq_mutex);
1428

1429 1430
        if (is->subtitleq.abort_request)
            goto the_end;
1431

1432 1433 1434 1435 1436 1437 1438 1439
        sp = &is->subpq[is->subpq_windex];

       /* NOTE: ipts is the PTS of the _first_ picture beginning in
           this packet, if any */
        pts = 0;
        if (pkt->pts != AV_NOPTS_VALUE)
            pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;

1440 1441
        len1 = avcodec_decode_subtitle(is->subtitle_st->codec,
                                    &sp->sub, &got_subtitle,
1442 1443 1444 1445 1446
                                    pkt->data, pkt->size);
//            if (len1 < 0)
//                break;
        if (got_subtitle && sp->sub.format == 0) {
            sp->pts = pts;
1447

1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467
            for (i = 0; i < sp->sub.num_rects; i++)
            {
                for (j = 0; j < sp->sub.rects[i].nb_colors; j++)
                {
                    RGBA_IN(r, g, b, a, sp->sub.rects[i].rgba_palette + j);
                    y = RGB_TO_Y_CCIR(r, g, b);
                    u = RGB_TO_U_CCIR(r, g, b, 0);
                    v = RGB_TO_V_CCIR(r, g, b, 0);
                    YUVA_OUT(sp->sub.rects[i].rgba_palette + j, y, u, v, a);
                }
            }

            /* now we can update the picture count */
            if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
                is->subpq_windex = 0;
            SDL_LockMutex(is->subpq_mutex);
            is->subpq_size++;
            SDL_UnlockMutex(is->subpq_mutex);
        }
        av_free_packet(pkt);
1468
//        if (step)
1469 1470 1471 1472 1473 1474 1475
//            if (cur_stream)
//                stream_pause(cur_stream);
    }
 the_end:
    return 0;
}

F
Fabrice Bellard 已提交
1476 1477 1478 1479 1480
/* copy samples for viewing in editor window */
static void update_sample_display(VideoState *is, short *samples, int samples_size)
{
    int size, len, channels;

1481
    channels = is->audio_st->codec->channels;
F
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1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498

    size = samples_size / sizeof(short);
    while (size > 0) {
        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
        if (len > size)
            len = size;
        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
        samples += len;
        is->sample_array_index += len;
        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
            is->sample_array_index = 0;
        size -= len;
    }
}

/* return the new audio buffer size (samples can be added or deleted
   to get better sync if video or external master clock) */
1499
static int synchronize_audio(VideoState *is, short *samples,
1500
                             int samples_size1, double pts)
F
Fabrice Bellard 已提交
1501
{
1502
    int n, samples_size;
F
Fabrice Bellard 已提交
1503
    double ref_clock;
1504

1505
    n = 2 * is->audio_st->codec->channels;
1506
    samples_size = samples_size1;
F
Fabrice Bellard 已提交
1507 1508 1509

    /* if not master, then we try to remove or add samples to correct the clock */
    if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1510 1511
         is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
        double diff, avg_diff;
F
Fabrice Bellard 已提交
1512
        int wanted_size, min_size, max_size, nb_samples;
1513

1514 1515
        ref_clock = get_master_clock(is);
        diff = get_audio_clock(is) - ref_clock;
1516

1517 1518 1519 1520 1521 1522 1523 1524 1525 1526
        if (diff < AV_NOSYNC_THRESHOLD) {
            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
                /* not enough measures to have a correct estimate */
                is->audio_diff_avg_count++;
            } else {
                /* estimate the A-V difference */
                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);

                if (fabs(avg_diff) >= is->audio_diff_threshold) {
1527
                    wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1528
                    nb_samples = samples_size / n;
1529

1530 1531 1532 1533 1534 1535
                    min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
                    max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
                    if (wanted_size < min_size)
                        wanted_size = min_size;
                    else if (wanted_size > max_size)
                        wanted_size = max_size;
1536

1537 1538 1539 1540 1541 1542 1543
                    /* add or remove samples to correction the synchro */
                    if (wanted_size < samples_size) {
                        /* remove samples */
                        samples_size = wanted_size;
                    } else if (wanted_size > samples_size) {
                        uint8_t *samples_end, *q;
                        int nb;
1544

1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557
                        /* add samples */
                        nb = (samples_size - wanted_size);
                        samples_end = (uint8_t *)samples + samples_size - n;
                        q = samples_end + n;
                        while (nb > 0) {
                            memcpy(q, samples_end, n);
                            q += n;
                            nb -= n;
                        }
                        samples_size = wanted_size;
                    }
                }
#if 0
1558 1559
                printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
                       diff, avg_diff, samples_size - samples_size1,
1560 1561
                       is->audio_clock, is->video_clock, is->audio_diff_threshold);
#endif
F
Fabrice Bellard 已提交
1562
            }
1563 1564 1565 1566 1567
        } else {
            /* too big difference : may be initial PTS errors, so
               reset A-V filter */
            is->audio_diff_avg_count = 0;
            is->audio_diff_cum = 0;
F
Fabrice Bellard 已提交
1568 1569 1570 1571 1572 1573 1574
        }
    }

    return samples_size;
}

/* decode one audio frame and returns its uncompressed size */
1575
static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, int buf_size, double *pts_ptr)
F
Fabrice Bellard 已提交
1576 1577
{
    AVPacket *pkt = &is->audio_pkt;
F
Fabrice Bellard 已提交
1578
    int n, len1, data_size;
F
Fabrice Bellard 已提交
1579 1580 1581
    double pts;

    for(;;) {
F
Fabrice Bellard 已提交
1582
        /* NOTE: the audio packet can contain several frames */
F
Fabrice Bellard 已提交
1583
        while (is->audio_pkt_size > 0) {
1584 1585
            data_size = buf_size;
            len1 = avcodec_decode_audio2(is->audio_st->codec,
1586
                                        (int16_t *)audio_buf, &data_size,
F
Fabrice Bellard 已提交
1587
                                        is->audio_pkt_data, is->audio_pkt_size);
F
Fabrice Bellard 已提交
1588 1589 1590
            if (len1 < 0) {
                /* if error, we skip the frame */
                is->audio_pkt_size = 0;
F
Fabrice Bellard 已提交
1591
                break;
F
Fabrice Bellard 已提交
1592
            }
1593

F
Fabrice Bellard 已提交
1594 1595
            is->audio_pkt_data += len1;
            is->audio_pkt_size -= len1;
F
Fabrice Bellard 已提交
1596 1597 1598 1599 1600
            if (data_size <= 0)
                continue;
            /* if no pts, then compute it */
            pts = is->audio_clock;
            *pts_ptr = pts;
1601
            n = 2 * is->audio_st->codec->channels;
1602
            is->audio_clock += (double)data_size /
1603
                (double)(n * is->audio_st->codec->sample_rate);
1604
#if defined(DEBUG_SYNC)
F
Fabrice Bellard 已提交
1605 1606 1607 1608 1609 1610
            {
                static double last_clock;
                printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
                       is->audio_clock - last_clock,
                       is->audio_clock, pts);
                last_clock = is->audio_clock;
F
Fabrice Bellard 已提交
1611
            }
F
Fabrice Bellard 已提交
1612 1613
#endif
            return data_size;
F
Fabrice Bellard 已提交
1614 1615
        }

F
Fabrice Bellard 已提交
1616 1617
        /* free the current packet */
        if (pkt->data)
F
Fabrice Bellard 已提交
1618
            av_free_packet(pkt);
1619

F
Fabrice Bellard 已提交
1620 1621 1622
        if (is->paused || is->audioq.abort_request) {
            return -1;
        }
1623

F
Fabrice Bellard 已提交
1624 1625 1626
        /* read next packet */
        if (packet_queue_get(&is->audioq, pkt, 1) < 0)
            return -1;
1627 1628 1629 1630 1631
        if(pkt->data == flush_pkt.data){
            avcodec_flush_buffers(is->audio_st->codec);
            continue;
        }

F
Fabrice Bellard 已提交
1632 1633
        is->audio_pkt_data = pkt->data;
        is->audio_pkt_size = pkt->size;
1634

F
Fabrice Bellard 已提交
1635 1636
        /* if update the audio clock with the pts */
        if (pkt->pts != AV_NOPTS_VALUE) {
1637
            is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
F
Fabrice Bellard 已提交
1638
        }
F
Fabrice Bellard 已提交
1639 1640 1641
    }
}

1642 1643 1644
/* get the current audio output buffer size, in samples. With SDL, we
   cannot have a precise information */
static int audio_write_get_buf_size(VideoState *is)
F
Fabrice Bellard 已提交
1645
{
1646
    return is->audio_buf_size - is->audio_buf_index;
F
Fabrice Bellard 已提交
1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657
}


/* prepare a new audio buffer */
void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
{
    VideoState *is = opaque;
    int audio_size, len1;
    double pts;

    audio_callback_time = av_gettime();
1658

F
Fabrice Bellard 已提交
1659 1660
    while (len > 0) {
        if (is->audio_buf_index >= is->audio_buf_size) {
1661
           audio_size = audio_decode_frame(is, is->audio_buf, sizeof(is->audio_buf), &pts);
F
Fabrice Bellard 已提交
1662 1663 1664 1665 1666 1667 1668
           if (audio_size < 0) {
                /* if error, just output silence */
               is->audio_buf_size = 1024;
               memset(is->audio_buf, 0, is->audio_buf_size);
           } else {
               if (is->show_audio)
                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1669
               audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
F
Fabrice Bellard 已提交
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694
                                              pts);
               is->audio_buf_size = audio_size;
           }
           is->audio_buf_index = 0;
        }
        len1 = is->audio_buf_size - is->audio_buf_index;
        if (len1 > len)
            len1 = len;
        memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
        len -= len1;
        stream += len1;
        is->audio_buf_index += len1;
    }
}

/* open a given stream. Return 0 if OK */
static int stream_component_open(VideoState *is, int stream_index)
{
    AVFormatContext *ic = is->ic;
    AVCodecContext *enc;
    AVCodec *codec;
    SDL_AudioSpec wanted_spec, spec;

    if (stream_index < 0 || stream_index >= ic->nb_streams)
        return -1;
1695
    enc = ic->streams[stream_index]->codec;
1696

F
Fabrice Bellard 已提交
1697 1698 1699 1700
    /* prepare audio output */
    if (enc->codec_type == CODEC_TYPE_AUDIO) {
        wanted_spec.freq = enc->sample_rate;
        wanted_spec.format = AUDIO_S16SYS;
1701 1702 1703
        /* hack for AC3. XXX: suppress that */
        if (enc->channels > 2)
            enc->channels = 2;
F
Fabrice Bellard 已提交
1704 1705
        wanted_spec.channels = enc->channels;
        wanted_spec.silence = 0;
1706
        wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
F
Fabrice Bellard 已提交
1707 1708
        wanted_spec.callback = sdl_audio_callback;
        wanted_spec.userdata = is;
1709 1710
        if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
            fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
F
Fabrice Bellard 已提交
1711
            return -1;
1712
        }
F
Fabrice Bellard 已提交
1713 1714 1715 1716
        is->audio_hw_buf_size = spec.size;
    }

    codec = avcodec_find_decoder(enc->codec_id);
M
Michael Niedermayer 已提交
1717 1718
    enc->debug_mv = debug_mv;
    enc->debug = debug;
M
-bug  
Michael Niedermayer 已提交
1719
    enc->workaround_bugs = workaround_bugs;
M
Michael Niedermayer 已提交
1720
    enc->lowres = lowres;
M
Michael Niedermayer 已提交
1721
    if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
M
Michael Niedermayer 已提交
1722
    enc->idct_algo= idct;
1723
    if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
M
Michael Niedermayer 已提交
1724 1725 1726
    enc->skip_frame= skip_frame;
    enc->skip_idct= skip_idct;
    enc->skip_loop_filter= skip_loop_filter;
1727 1728
    enc->error_resilience= error_resilience;
    enc->error_concealment= error_concealment;
F
Fabrice Bellard 已提交
1729 1730 1731
    if (!codec ||
        avcodec_open(enc, codec) < 0)
        return -1;
1732 1733 1734
    if(thread_count>1)
        avcodec_thread_init(enc, thread_count);
    enc->thread_count= thread_count;
1735
    switch(enc->codec_type) {
F
Fabrice Bellard 已提交
1736 1737 1738 1739 1740
    case CODEC_TYPE_AUDIO:
        is->audio_stream = stream_index;
        is->audio_st = ic->streams[stream_index];
        is->audio_buf_size = 0;
        is->audio_buf_index = 0;
1741 1742 1743 1744 1745 1746 1747 1748

        /* init averaging filter */
        is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
        is->audio_diff_avg_count = 0;
        /* since we do not have a precise anough audio fifo fullness,
           we correct audio sync only if larger than this threshold */
        is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;

F
Fabrice Bellard 已提交
1749 1750
        memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
        packet_queue_init(&is->audioq);
1751
        SDL_PauseAudio(0);
F
Fabrice Bellard 已提交
1752 1753 1754 1755 1756
        break;
    case CODEC_TYPE_VIDEO:
        is->video_stream = stream_index;
        is->video_st = ic->streams[stream_index];

1757 1758 1759 1760
        is->frame_last_delay = 40e-3;
        is->frame_timer = (double)av_gettime() / 1000000.0;
        is->video_current_pts_time = av_gettime();

F
Fabrice Bellard 已提交
1761 1762
        packet_queue_init(&is->videoq);
        is->video_tid = SDL_CreateThread(video_thread, is);
1763 1764 1765

        enc->    get_buffer=     my_get_buffer;
        enc->release_buffer= my_release_buffer;
F
Fabrice Bellard 已提交
1766
        break;
1767 1768 1769 1770
    case CODEC_TYPE_SUBTITLE:
        is->subtitle_stream = stream_index;
        is->subtitle_st = ic->streams[stream_index];
        packet_queue_init(&is->subtitleq);
1771

1772 1773
        is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
        break;
F
Fabrice Bellard 已提交
1774 1775 1776 1777 1778 1779 1780 1781 1782 1783
    default:
        break;
    }
    return 0;
}

static void stream_component_close(VideoState *is, int stream_index)
{
    AVFormatContext *ic = is->ic;
    AVCodecContext *enc;
1784

1785 1786
    if (stream_index < 0 || stream_index >= ic->nb_streams)
        return;
1787
    enc = ic->streams[stream_index]->codec;
F
Fabrice Bellard 已提交
1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809

    switch(enc->codec_type) {
    case CODEC_TYPE_AUDIO:
        packet_queue_abort(&is->audioq);

        SDL_CloseAudio();

        packet_queue_end(&is->audioq);
        break;
    case CODEC_TYPE_VIDEO:
        packet_queue_abort(&is->videoq);

        /* note: we also signal this mutex to make sure we deblock the
           video thread in all cases */
        SDL_LockMutex(is->pictq_mutex);
        SDL_CondSignal(is->pictq_cond);
        SDL_UnlockMutex(is->pictq_mutex);

        SDL_WaitThread(is->video_tid, NULL);

        packet_queue_end(&is->videoq);
        break;
1810 1811
    case CODEC_TYPE_SUBTITLE:
        packet_queue_abort(&is->subtitleq);
1812

1813 1814 1815 1816
        /* note: we also signal this mutex to make sure we deblock the
           video thread in all cases */
        SDL_LockMutex(is->subpq_mutex);
        is->subtitle_stream_changed = 1;
1817

1818 1819 1820 1821 1822 1823 1824
        SDL_CondSignal(is->subpq_cond);
        SDL_UnlockMutex(is->subpq_mutex);

        SDL_WaitThread(is->subtitle_tid, NULL);

        packet_queue_end(&is->subtitleq);
        break;
F
Fabrice Bellard 已提交
1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838
    default:
        break;
    }

    avcodec_close(enc);
    switch(enc->codec_type) {
    case CODEC_TYPE_AUDIO:
        is->audio_st = NULL;
        is->audio_stream = -1;
        break;
    case CODEC_TYPE_VIDEO:
        is->video_st = NULL;
        is->video_stream = -1;
        break;
1839 1840 1841 1842
    case CODEC_TYPE_SUBTITLE:
        is->subtitle_st = NULL;
        is->subtitle_stream = -1;
        break;
F
Fabrice Bellard 已提交
1843 1844 1845 1846 1847
    default:
        break;
    }
}

1848
static void dump_stream_info(const AVFormatContext *s)
F
Fabrice Bellard 已提交
1849 1850 1851 1852 1853 1854 1855
{
    if (s->track != 0)
        fprintf(stderr, "Track: %d\n", s->track);
    if (s->title[0] != '\0')
        fprintf(stderr, "Title: %s\n", s->title);
    if (s->author[0] != '\0')
        fprintf(stderr, "Author: %s\n", s->author);
P
Panagiotis Issaris 已提交
1856 1857 1858 1859
    if (s->copyright[0] != '\0')
        fprintf(stderr, "Copyright: %s\n", s->copyright);
    if (s->comment[0] != '\0')
        fprintf(stderr, "Comment: %s\n", s->comment);
F
Fabrice Bellard 已提交
1860 1861 1862 1863 1864 1865 1866 1867
    if (s->album[0] != '\0')
        fprintf(stderr, "Album: %s\n", s->album);
    if (s->year != 0)
        fprintf(stderr, "Year: %d\n", s->year);
    if (s->genre[0] != '\0')
        fprintf(stderr, "Genre: %s\n", s->genre);
}

1868 1869 1870 1871 1872 1873 1874 1875
/* since we have only one decoding thread, we can use a global
   variable instead of a thread local variable */
static VideoState *global_video_state;

static int decode_interrupt_cb(void)
{
    return (global_video_state && global_video_state->abort_request);
}
F
Fabrice Bellard 已提交
1876 1877 1878 1879 1880 1881

/* this thread gets the stream from the disk or the network */
static int decode_thread(void *arg)
{
    VideoState *is = arg;
    AVFormatContext *ic;
F
Fabrice Bellard 已提交
1882
    int err, i, ret, video_index, audio_index, use_play;
F
Fabrice Bellard 已提交
1883
    AVPacket pkt1, *pkt = &pkt1;
1884
    AVFormatParameters params, *ap = &params;
F
Fabrice Bellard 已提交
1885 1886 1887 1888 1889

    video_index = -1;
    audio_index = -1;
    is->video_stream = -1;
    is->audio_stream = -1;
1890
    is->subtitle_stream = -1;
F
Fabrice Bellard 已提交
1891

1892 1893 1894
    global_video_state = is;
    url_set_interrupt_cb(decode_interrupt_cb);

1895
    memset(ap, 0, sizeof(*ap));
F
Fabrice Bellard 已提交
1896 1897
    ap->initial_pause = 1; /* we force a pause when starting an RTSP
                              stream */
1898

1899 1900
    ap->width = frame_width;
    ap->height= frame_height;
M
Michael Niedermayer 已提交
1901
    ap->time_base= (AVRational){1, 25};
1902
    ap->pix_fmt = frame_pix_fmt;
M
Michael Niedermayer 已提交
1903

1904
    err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1905 1906 1907 1908 1909
    if (err < 0) {
        print_error(is->filename, err);
        ret = -1;
        goto fail;
    }
F
Fabrice Bellard 已提交
1910
    is->ic = ic;
F
Fabrice Bellard 已提交
1911
#ifdef CONFIG_NETWORK
1912
    use_play = (ic->iformat == &rtsp_demuxer);
F
Fabrice Bellard 已提交
1913 1914 1915
#else
    use_play = 0;
#endif
1916 1917 1918 1919

    if(genpts)
        ic->flags |= AVFMT_FLAG_GENPTS;

F
Fabrice Bellard 已提交
1920 1921 1922 1923 1924 1925 1926
    if (!use_play) {
        err = av_find_stream_info(ic);
        if (err < 0) {
            fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
            ret = -1;
            goto fail;
        }
1927
        ic->pb.eof_reached= 0; //FIXME hack, ffplay maybe shouldnt use url_feof() to test for the end
1928
    }
F
Fabrice Bellard 已提交
1929 1930 1931 1932 1933 1934 1935 1936 1937

    /* if seeking requested, we execute it */
    if (start_time != AV_NOPTS_VALUE) {
        int64_t timestamp;

        timestamp = start_time;
        /* add the stream start time */
        if (ic->start_time != AV_NOPTS_VALUE)
            timestamp += ic->start_time;
1938
        ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
F
Fabrice Bellard 已提交
1939
        if (ret < 0) {
1940
            fprintf(stderr, "%s: could not seek to position %0.3f\n",
F
Fabrice Bellard 已提交
1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956
                    is->filename, (double)timestamp / AV_TIME_BASE);
        }
    }

    /* now we can begin to play (RTSP stream only) */
    av_read_play(ic);

    if (use_play) {
        err = av_find_stream_info(ic);
        if (err < 0) {
            fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
            ret = -1;
            goto fail;
        }
    }

F
Fabrice Bellard 已提交
1957
    for(i = 0; i < ic->nb_streams; i++) {
1958
        AVCodecContext *enc = ic->streams[i]->codec;
F
Fabrice Bellard 已提交
1959 1960
        switch(enc->codec_type) {
        case CODEC_TYPE_AUDIO:
1961
            if ((audio_index < 0 || wanted_audio_stream-- > 0) && !audio_disable)
F
Fabrice Bellard 已提交
1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973
                audio_index = i;
            break;
        case CODEC_TYPE_VIDEO:
            if (video_index < 0 && !video_disable)
                video_index = i;
            break;
        default:
            break;
        }
    }
    if (show_status) {
        dump_format(ic, 0, is->filename, 0);
F
Fabrice Bellard 已提交
1974
        dump_stream_info(ic);
F
Fabrice Bellard 已提交
1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989
    }

    /* open the streams */
    if (audio_index >= 0) {
        stream_component_open(is, audio_index);
    }

    if (video_index >= 0) {
        stream_component_open(is, video_index);
    } else {
        if (!display_disable)
            is->show_audio = 1;
    }

    if (is->video_stream < 0 && is->audio_stream < 0) {
1990 1991
        fprintf(stderr, "%s: could not open codecs\n", is->filename);
        ret = -1;
F
Fabrice Bellard 已提交
1992 1993 1994 1995 1996 1997
        goto fail;
    }

    for(;;) {
        if (is->abort_request)
            break;
1998
#ifdef CONFIG_NETWORK
1999 2000
        if (is->paused != is->last_paused) {
            is->last_paused = is->paused;
F
Fabrice Bellard 已提交
2001 2002 2003 2004
            if (is->paused)
                av_read_pause(ic);
            else
                av_read_play(ic);
2005
        }
2006
        if (is->paused && ic->iformat == &rtsp_demuxer) {
2007 2008 2009 2010 2011
            /* wait 10 ms to avoid trying to get another packet */
            /* XXX: horrible */
            SDL_Delay(10);
            continue;
        }
2012
#endif
F
Fabrice Bellard 已提交
2013
        if (is->seek_req) {
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
            int stream_index= -1;
            int64_t seek_target= is->seek_pos;

            if     (is->   video_stream >= 0) stream_index= is->   video_stream;
            else if(is->   audio_stream >= 0) stream_index= is->   audio_stream;
            else if(is->subtitle_stream >= 0) stream_index= is->subtitle_stream;

            if(stream_index>=0){
                seek_target= av_rescale_q(seek_target, AV_TIME_BASE_Q, ic->streams[stream_index]->time_base);
            }

            ret = av_seek_frame(is->ic, stream_index, seek_target, is->seek_flags);
F
Fabrice Bellard 已提交
2026 2027
            if (ret < 0) {
                fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2028 2029 2030
            }else{
                if (is->audio_stream >= 0) {
                    packet_queue_flush(&is->audioq);
2031
                    packet_queue_put(&is->audioq, &flush_pkt);
2032
                }
2033 2034
                if (is->subtitle_stream >= 0) {
                    packet_queue_flush(&is->subtitleq);
2035
                    packet_queue_put(&is->subtitleq, &flush_pkt);
2036
                }
2037 2038
                if (is->video_stream >= 0) {
                    packet_queue_flush(&is->videoq);
2039
                    packet_queue_put(&is->videoq, &flush_pkt);
2040
                }
F
Fabrice Bellard 已提交
2041 2042 2043
            }
            is->seek_req = 0;
        }
2044

F
Fabrice Bellard 已提交
2045 2046
        /* if the queue are full, no need to read more */
        if (is->audioq.size > MAX_AUDIOQ_SIZE ||
2047 2048
            is->videoq.size > MAX_VIDEOQ_SIZE ||
            is->subtitleq.size > MAX_SUBTITLEQ_SIZE ||
2049
            url_feof(&ic->pb)) {
F
Fabrice Bellard 已提交
2050 2051 2052 2053
            /* wait 10 ms */
            SDL_Delay(10);
            continue;
        }
F
Fabrice Bellard 已提交
2054
        ret = av_read_frame(ic, pkt);
F
Fabrice Bellard 已提交
2055
        if (ret < 0) {
2056
            if (url_ferror(&ic->pb) == 0) {
2057
                SDL_Delay(100); /* wait for user event */
2058 2059 2060
                continue;
            } else
                break;
F
Fabrice Bellard 已提交
2061 2062 2063 2064 2065
        }
        if (pkt->stream_index == is->audio_stream) {
            packet_queue_put(&is->audioq, pkt);
        } else if (pkt->stream_index == is->video_stream) {
            packet_queue_put(&is->videoq, pkt);
2066 2067
        } else if (pkt->stream_index == is->subtitle_stream) {
            packet_queue_put(&is->subtitleq, pkt);
F
Fabrice Bellard 已提交
2068 2069 2070 2071 2072 2073 2074 2075 2076
        } else {
            av_free_packet(pkt);
        }
    }
    /* wait until the end */
    while (!is->abort_request) {
        SDL_Delay(100);
    }

2077
    ret = 0;
F
Fabrice Bellard 已提交
2078
 fail:
2079 2080 2081
    /* disable interrupting */
    global_video_state = NULL;

F
Fabrice Bellard 已提交
2082 2083 2084 2085 2086
    /* close each stream */
    if (is->audio_stream >= 0)
        stream_component_close(is, is->audio_stream);
    if (is->video_stream >= 0)
        stream_component_close(is, is->video_stream);
2087 2088
    if (is->subtitle_stream >= 0)
        stream_component_close(is, is->subtitle_stream);
2089 2090 2091 2092
    if (is->ic) {
        av_close_input_file(is->ic);
        is->ic = NULL; /* safety */
    }
2093 2094
    url_set_interrupt_cb(NULL);

2095 2096
    if (ret != 0) {
        SDL_Event event;
2097

2098 2099 2100 2101
        event.type = FF_QUIT_EVENT;
        event.user.data1 = is;
        SDL_PushEvent(&event);
    }
F
Fabrice Bellard 已提交
2102 2103 2104
    return 0;
}

2105
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
F
Fabrice Bellard 已提交
2106 2107 2108 2109 2110 2111 2112
{
    VideoState *is;

    is = av_mallocz(sizeof(VideoState));
    if (!is)
        return NULL;
    pstrcpy(is->filename, sizeof(is->filename), filename);
2113
    is->iformat = iformat;
F
Fabrice Bellard 已提交
2114 2115 2116 2117 2118 2119
    is->ytop = 0;
    is->xleft = 0;

    /* start video display */
    is->pictq_mutex = SDL_CreateMutex();
    is->pictq_cond = SDL_CreateCond();
2120

2121 2122
    is->subpq_mutex = SDL_CreateMutex();
    is->subpq_cond = SDL_CreateCond();
2123

F
Fabrice Bellard 已提交
2124 2125 2126
    /* add the refresh timer to draw the picture */
    schedule_refresh(is, 40);

2127
    is->av_sync_type = av_sync_type;
F
Fabrice Bellard 已提交
2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153
    is->parse_tid = SDL_CreateThread(decode_thread, is);
    if (!is->parse_tid) {
        av_free(is);
        return NULL;
    }
    return is;
}

static void stream_close(VideoState *is)
{
    VideoPicture *vp;
    int i;
    /* XXX: use a special url_shutdown call to abort parse cleanly */
    is->abort_request = 1;
    SDL_WaitThread(is->parse_tid, NULL);

    /* free all pictures */
    for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
        vp = &is->pictq[i];
        if (vp->bmp) {
            SDL_FreeYUVOverlay(vp->bmp);
            vp->bmp = NULL;
        }
    }
    SDL_DestroyMutex(is->pictq_mutex);
    SDL_DestroyCond(is->pictq_cond);
2154 2155
    SDL_DestroyMutex(is->subpq_mutex);
    SDL_DestroyCond(is->subpq_cond);
F
Fabrice Bellard 已提交
2156 2157
}

2158
static void stream_cycle_channel(VideoState *is, int codec_type)
2159 2160 2161 2162 2163 2164 2165
{
    AVFormatContext *ic = is->ic;
    int start_index, stream_index;
    AVStream *st;

    if (codec_type == CODEC_TYPE_VIDEO)
        start_index = is->video_stream;
2166
    else if (codec_type == CODEC_TYPE_AUDIO)
2167
        start_index = is->audio_stream;
2168 2169 2170
    else
        start_index = is->subtitle_stream;
    if (start_index < (codec_type == CODEC_TYPE_SUBTITLE ? -1 : 0))
2171 2172 2173 2174
        return;
    stream_index = start_index;
    for(;;) {
        if (++stream_index >= is->ic->nb_streams)
2175 2176 2177 2178 2179 2180 2181 2182
        {
            if (codec_type == CODEC_TYPE_SUBTITLE)
            {
                stream_index = -1;
                goto the_end;
            } else
                stream_index = 0;
        }
2183 2184 2185
        if (stream_index == start_index)
            return;
        st = ic->streams[stream_index];
2186
        if (st->codec->codec_type == codec_type) {
2187 2188 2189
            /* check that parameters are OK */
            switch(codec_type) {
            case CODEC_TYPE_AUDIO:
2190 2191
                if (st->codec->sample_rate != 0 &&
                    st->codec->channels != 0)
2192 2193 2194
                    goto the_end;
                break;
            case CODEC_TYPE_VIDEO:
2195
            case CODEC_TYPE_SUBTITLE:
2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207
                goto the_end;
            default:
                break;
            }
        }
    }
 the_end:
    stream_component_close(is, start_index);
    stream_component_open(is, stream_index);
}


2208
static void toggle_full_screen(void)
F
Fabrice Bellard 已提交
2209 2210
{
    is_full_screen = !is_full_screen;
2211 2212
    if (!fs_screen_width) {
        /* use default SDL method */
2213
//        SDL_WM_ToggleFullScreen(screen);
F
Fabrice Bellard 已提交
2214
    }
2215
    video_open(cur_stream);
F
Fabrice Bellard 已提交
2216 2217
}

2218
static void toggle_pause(void)
F
Fabrice Bellard 已提交
2219 2220 2221
{
    if (cur_stream)
        stream_pause(cur_stream);
2222 2223 2224
    step = 0;
}

2225
static void step_to_next_frame(void)
2226 2227 2228 2229 2230 2231 2232
{
    if (cur_stream) {
        if (cur_stream->paused)
            cur_stream->paused=0;
        cur_stream->video_current_pts = get_video_clock(cur_stream);
    }
    step = 1;
F
Fabrice Bellard 已提交
2233 2234
}

2235
static void do_exit(void)
F
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2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246
{
    if (cur_stream) {
        stream_close(cur_stream);
        cur_stream = NULL;
    }
    if (show_status)
        printf("\n");
    SDL_Quit();
    exit(0);
}

2247
static void toggle_audio_display(void)
F
Fabrice Bellard 已提交
2248 2249 2250 2251 2252 2253 2254
{
    if (cur_stream) {
        cur_stream->show_audio = !cur_stream->show_audio;
    }
}

/* handle an event sent by the GUI */
2255
static void event_loop(void)
F
Fabrice Bellard 已提交
2256 2257
{
    SDL_Event event;
2258
    double incr, pos, frac;
F
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2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275

    for(;;) {
        SDL_WaitEvent(&event);
        switch(event.type) {
        case SDL_KEYDOWN:
            switch(event.key.keysym.sym) {
            case SDLK_ESCAPE:
            case SDLK_q:
                do_exit();
                break;
            case SDLK_f:
                toggle_full_screen();
                break;
            case SDLK_p:
            case SDLK_SPACE:
                toggle_pause();
                break;
2276 2277 2278
            case SDLK_s: //S: Step to next frame
                step_to_next_frame();
                break;
F
Fabrice Bellard 已提交
2279
            case SDLK_a:
2280
                if (cur_stream)
2281 2282 2283
                    stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
                break;
            case SDLK_v:
2284
                if (cur_stream)
2285 2286
                    stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
                break;
2287
            case SDLK_t:
2288
                if (cur_stream)
2289 2290
                    stream_cycle_channel(cur_stream, CODEC_TYPE_SUBTITLE);
                break;
2291
            case SDLK_w:
F
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2292 2293
                toggle_audio_display();
                break;
F
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2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306
            case SDLK_LEFT:
                incr = -10.0;
                goto do_seek;
            case SDLK_RIGHT:
                incr = 10.0;
                goto do_seek;
            case SDLK_UP:
                incr = 60.0;
                goto do_seek;
            case SDLK_DOWN:
                incr = -60.0;
            do_seek:
                if (cur_stream) {
2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319
                    if (seek_by_bytes) {
                        pos = url_ftell(&cur_stream->ic->pb);
                        if (cur_stream->ic->bit_rate)
                            incr *= cur_stream->ic->bit_rate / 60.0;
                        else
                            incr *= 180000.0;
                        pos += incr;
                        stream_seek(cur_stream, pos, incr);
                    } else {
                        pos = get_master_clock(cur_stream);
                        pos += incr;
                        stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
                    }
F
Fabrice Bellard 已提交
2320 2321
                }
                break;
F
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2322 2323 2324 2325
            default:
                break;
            }
            break;
2326
        case SDL_MOUSEBUTTONDOWN:
2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343
            if (cur_stream) {
                int ns, hh, mm, ss;
                int tns, thh, tmm, tss;
                tns = cur_stream->ic->duration/1000000LL;
                thh = tns/3600;
                tmm = (tns%3600)/60;
                tss = (tns%60);
                frac = (double)event.button.x/(double)cur_stream->width;
                ns = frac*tns;
                hh = ns/3600;
                mm = (ns%3600)/60;
                ss = (ns%60);
                fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
                        hh, mm, ss, thh, tmm, tss);
                stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
            }
            break;
F
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        case SDL_VIDEORESIZE:
            if (cur_stream) {
2346
                screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
F
Fabrice Bellard 已提交
2347
                                          SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2348 2349
                screen_width = cur_stream->width = event.resize.w;
                screen_height= cur_stream->height= event.resize.h;
F
Fabrice Bellard 已提交
2350 2351 2352
            }
            break;
        case SDL_QUIT:
2353
        case FF_QUIT_EVENT:
F
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2354 2355 2356
            do_exit();
            break;
        case FF_ALLOC_EVENT:
2357
            video_open(event.user.data1);
F
Fabrice Bellard 已提交
2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368
            alloc_picture(event.user.data1);
            break;
        case FF_REFRESH_EVENT:
            video_refresh_timer(event.user.data1);
            break;
        default:
            break;
        }
    }
}

2369 2370
static void opt_frame_size(const char *arg)
{
2371
    if (parse_image_size(&frame_width, &frame_height, arg) < 0) {
2372 2373 2374 2375 2376 2377 2378 2379 2380
        fprintf(stderr, "Incorrect frame size\n");
        exit(1);
    }
    if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
        fprintf(stderr, "Frame size must be a multiple of 2\n");
        exit(1);
    }
}

F
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2381 2382 2383
void opt_width(const char *arg)
{
    screen_width = atoi(arg);
M
Michael Niedermayer 已提交
2384 2385 2386 2387
    if(screen_width<=0){
        fprintf(stderr, "invalid width\n");
        exit(1);
    }
F
Fabrice Bellard 已提交
2388 2389 2390 2391 2392
}

void opt_height(const char *arg)
{
    screen_height = atoi(arg);
M
Michael Niedermayer 已提交
2393 2394 2395 2396
    if(screen_height<=0){
        fprintf(stderr, "invalid height\n");
        exit(1);
    }
F
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2397 2398 2399 2400 2401 2402 2403 2404 2405 2406
}

static void opt_format(const char *arg)
{
    file_iformat = av_find_input_format(arg);
    if (!file_iformat) {
        fprintf(stderr, "Unknown input format: %s\n", arg);
        exit(1);
    }
}
2407

2408 2409 2410 2411 2412
static void opt_frame_pix_fmt(const char *arg)
{
    frame_pix_fmt = avcodec_get_pix_fmt(arg);
}

2413
#ifdef CONFIG_NETWORK
2414 2415 2416 2417 2418
void opt_rtp_tcp(void)
{
    /* only tcp protocol */
    rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
}
2419
#endif
2420

2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432
void opt_sync(const char *arg)
{
    if (!strcmp(arg, "audio"))
        av_sync_type = AV_SYNC_AUDIO_MASTER;
    else if (!strcmp(arg, "video"))
        av_sync_type = AV_SYNC_VIDEO_MASTER;
    else if (!strcmp(arg, "ext"))
        av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
    else
        show_help();
}

F
Fabrice Bellard 已提交
2433 2434 2435 2436 2437
void opt_seek(const char *arg)
{
    start_time = parse_date(arg, 1);
}

2438 2439
static void opt_debug(const char *arg)
{
2440
    av_log_level = 99;
2441 2442
    debug = atoi(arg);
}
2443

2444 2445 2446 2447
static void opt_vismv(const char *arg)
{
    debug_mv = atoi(arg);
}
2448 2449 2450 2451

static void opt_thread_count(const char *arg)
{
    thread_count= atoi(arg);
2452
#if !defined(HAVE_THREADS)
2453 2454 2455
    fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
#endif
}
2456

F
Fabrice Bellard 已提交
2457
const OptionDef options[] = {
2458
    { "h", 0, {(void*)show_help}, "show help" },
F
Fabrice Bellard 已提交
2459 2460
    { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
    { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
2461
    { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2462
    { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
F
Fabrice Bellard 已提交
2463 2464
    { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
    { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2465
    { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_audio_stream}, "", "" },
F
Fabrice Bellard 已提交
2466
    { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2467
    { "bytes", OPT_BOOL, {(void*)&seek_by_bytes}, "seek by bytes" },
F
Fabrice Bellard 已提交
2468 2469
    { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
    { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2470
    { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
F
Fabrice Bellard 已提交
2471
    { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2472
    { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
M
-bug  
Michael Niedermayer 已提交
2473
    { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2474
    { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
2475
    { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2476
    { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2477
    { "drp", OPT_BOOL |OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts", ""},
M
Michael Niedermayer 已提交
2478
    { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
M
Michael Niedermayer 已提交
2479 2480 2481
    { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
    { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
    { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
M
Michael Niedermayer 已提交
2482
    { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
2483 2484
    { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_resilience}, "set error detection threshold (0-4)",  "threshold" },
    { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
2485
#ifdef CONFIG_NETWORK
2486
    { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
2487
#endif
2488 2489
    { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
    { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
F
Fabrice Bellard 已提交
2490 2491 2492 2493 2494
    { NULL, },
};

void show_help(void)
{
2495
    printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003-2006 Fabrice Bellard, et al.\n"
2496
           "usage: ffplay [options] input_file\n"
F
Fabrice Bellard 已提交
2497 2498
           "Simple media player\n");
    printf("\n");
2499 2500 2501 2502
    show_help_options(options, "Main options:\n",
                      OPT_EXPERT, 0);
    show_help_options(options, "\nAdvanced options:\n",
                      OPT_EXPERT, OPT_EXPERT);
F
Fabrice Bellard 已提交
2503 2504 2505 2506
    printf("\nWhile playing:\n"
           "q, ESC              quit\n"
           "f                   toggle full screen\n"
           "p, SPC              pause\n"
2507 2508
           "a                   cycle audio channel\n"
           "v                   cycle video channel\n"
2509
           "t                   cycle subtitle channel\n"
2510
           "w                   show audio waves\n"
F
Fabrice Bellard 已提交
2511 2512
           "left/right          seek backward/forward 10 seconds\n"
           "down/up             seek backward/forward 1 minute\n"
2513
           "mouse click         seek to percentage in file corresponding to fraction of width\n"
F
Fabrice Bellard 已提交
2514 2515 2516 2517 2518 2519
           );
    exit(1);
}

void parse_arg_file(const char *filename)
{
2520 2521
    if (!strcmp(filename, "-"))
                    filename = "pipe:";
F
Fabrice Bellard 已提交
2522 2523 2524 2525 2526 2527
    input_filename = filename;
}

/* Called from the main */
int main(int argc, char **argv)
{
2528
    int flags;
2529

F
Fabrice Bellard 已提交
2530 2531 2532
    /* register all codecs, demux and protocols */
    av_register_all();

2533 2534
    #ifdef CONFIG_OS2
      MorphToPM(); // Morph the VIO application to a PM one to be able to use Win* functions
2535

2536 2537 2538 2539 2540
      // Make stdout and stderr unbuffered
      setbuf( stdout, NULL );
      setbuf( stderr, NULL );
    #endif

F
Fabrice Bellard 已提交
2541 2542 2543 2544 2545 2546 2547 2548
    parse_options(argc, argv, options);

    if (!input_filename)
        show_help();

    if (display_disable) {
        video_disable = 1;
    }
2549
    flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2550
#if !defined(__MINGW32__) && !defined(CONFIG_DARWIN)
2551
    flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 or darwin */
2552
#endif
F
Fabrice Bellard 已提交
2553
    if (SDL_Init (flags)) {
2554
        fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
F
Fabrice Bellard 已提交
2555 2556 2557 2558
        exit(1);
    }

    if (!display_disable) {
2559
#ifdef HAVE_SDL_VIDEO_SIZE
2560 2561 2562
        const SDL_VideoInfo *vi = SDL_GetVideoInfo();
        fs_screen_width = vi->current_w;
        fs_screen_height = vi->current_h;
2563
#endif
F
Fabrice Bellard 已提交
2564 2565 2566 2567 2568 2569 2570
    }

    SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
    SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
    SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
    SDL_EventState(SDL_USEREVENT, SDL_IGNORE);

2571 2572 2573
    av_init_packet(&flush_pkt);
    flush_pkt.data= "FLUSH";

2574
    cur_stream = stream_open(input_filename, file_iformat);
F
Fabrice Bellard 已提交
2575 2576 2577 2578 2579 2580 2581

    event_loop();

    /* never returns */

    return 0;
}